Picture posted in a separate comment. The service worker (unsupported MIME type) error happens upon loading the page. The CORS error happens when I click update.

Hello Hashnode! I am an independent developer with a passion for video games and game development. I have previously worked at Electronic Arts, Google, and Kodable. In games I've worked on multiple AAA titles, a web/iOs kids education plarform, and my own projects including a large mod for Civ 5 and a mobile game. I also have a lot of experience in frontend/web development as well as full stack. Currently I'm working on improving my recent launch Suction Paint Labs as well as prototyping new projects.